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definitions=main-2602020125 List-Id: X-Webhook-Received: from 45-33-107-173.ip.linodeusercontent.com [45.33.107.173] by aws-us-west-2-korg-lkml-1.web.codeaurora.org with HTTPS for ; Mon, 02 Feb 2026 15:51:49 -0000 X-Groupsio-URL: https://lists.openembedded.org/g/openembedded-core/message/230376 --------------h7mgXFSEsINxZ807OvfYQh0g Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: quoted-printable X-MIME-Autoconverted: from 8bit to quoted-printable by mx0a-0064b401.pphosted.com id 6129vDWr3189312 On 2/2/2026 8:45 PM, Yoann Congal via lists.openembedded.org wrote: > ** > *CAUTION: This email comes from a non Wind River email account!* > Do not click links or open attachments unless you recognize the sender=20 > and know the content is safe. > > > Le=C2=A0dim. 1 f=C3=A9vr. 2026 =C3=A0=C2=A008:52, Mathieu Dubois-Briand= via=20 > lists.openembedded.org =20 > a =C3=A9cr= it=C2=A0: > > On Fri Jan 30, 2026 at 2:41 PM CET, Hemanth.KumarMD via > lists.openembedded.org wrote: > > From: Hemanth Kumar M D > > > > https://blog.rust-lang.org/2026/01/22/Rust-1.93.0/ > > Rust changes: https://github.com/rust-lang/rust/releases/tag/1.93= .0 > > Cargo changes: > https://doc.rust-lang.org/nightly/cargo/CHANGELOG.html#cargo-193-20= 26-01-22 > > > > * rust-oe-selftest.patch updated for 1.93: > >=C2=A0 =C2=A0Renamed UI test directive from add-core-stubs to add-= minicore > as in > > > https://github.com/rust-lang/rust/commit/3796f7de57f5d4cf4325d1f13a= eb07fdaa57983b > > > > * OE-selftests: > >=C2=A0 =C2=A0- Exclude src/tools/remote-test-client from test suit= e. > >=C2=A0 =C2=A0 =C2=A0This unit test modifies the TEST_DEVICE_ADDR e= nvironment > variable, > >=C2=A0 =C2=A0 =C2=A0which breaks the OE test harness that uses the= same variable for > >=C2=A0 =C2=A0 =C2=A0QEMU remote testing. Filed a bug with upstream= : > > https://github.com/rust-lang/rust/issues/151823 > > > >=C2=A0 =C2=A0- Enable +v8a feature for cortexa57. > >=C2=A0 =C2=A0 =C2=A0Rust 1.93.0 added a regression test (PR #14954= 9) to verify > that the > >=C2=A0 =C2=A0 =C2=A0ARMv8-A system register ttbr0_el2 is recognize= d in inline > assembly. > >=C2=A0 =C2=A0 =C2=A0This addresses issue #97724 where LLVM wasn't = recognizing > ttbr0_el2 > >=C2=A0 =C2=A0 =C2=A0as a valid register. Upstream Rust enables +v8= a by default > for all > >=C2=A0 =C2=A0 =C2=A0AArch64 targets (PR #105026), but Yocto's cust= om target > specification > >=C2=A0 =C2=A0 =C2=A0doesn't inherit this. Adding +v8a ensures LLVM= recognizes > ARMv8-A > >=C2=A0 =C2=A0 =C2=A0system registers, fixing the test failure. > > > >=C2=A0 =C2=A0 =C2=A0Related upstream links: > >=C2=A0 =C2=A0 =C2=A0- PR #149549: https://github.com/rust-lang/rus= t/pull/149549 > >=C2=A0 =C2=A0 =C2=A0- Issue #97724: https://github.com/rust-lang/r= ust/issues/97724 > >=C2=A0 =C2=A0 =C2=A0- PR #105026: https://github.com/rust-lang/rus= t/pull/105026 > > > > Test results: > > > > rust v1.93.0 > > +-------------+--------+---------+ > > | Machine=C2=A0 =C2=A0 =C2=A0| Passed | Skipped | > > +-------------+--------+---------+ > > | qemux86-64=C2=A0 | 21,689 |=C2=A0 =C2=A0646=C2=A0 =C2=A0| > > | qemux86=C2=A0 =C2=A0 =C2=A0| 21,439 |=C2=A0 =C2=A0896=C2=A0 =C2= =A0| > > | qemuarm64=C2=A0 =C2=A0| 21,495 |=C2=A0 =C2=A0840=C2=A0 =C2=A0| > > | qemuarm=C2=A0 =C2=A0 =C2=A0| 21,421 |=C2=A0 =C2=A0914=C2=A0 =C2= =A0| > > | qemuriscv64 | 21,466 |=C2=A0 =C2=A0869=C2=A0 =C2=A0| > > +-------------+--------+---------+ > > > > Test results difference (1.93.0 - 1.92.0): > > > > +-------------+--------+---------+ > > | Machine=C2=A0 =C2=A0 =C2=A0| Passed | Skipped | > > +-------------+--------+---------+ > > | qemux86-64=C2=A0 |=C2=A0 +205=C2=A0 |=C2=A0 =C2=A0+33=C2=A0 =C2= =A0| > > | qemux86=C2=A0 =C2=A0 =C2=A0|=C2=A0 +205=C2=A0 |=C2=A0 =C2=A0+33= =C2=A0 =C2=A0| > > | qemuarm64=C2=A0 =C2=A0|=C2=A0 +206=C2=A0 |=C2=A0 =C2=A0+32=C2=A0= =C2=A0| > > | qemuarm=C2=A0 =C2=A0 =C2=A0|=C2=A0 +205=C2=A0 |=C2=A0 =C2=A0+33= =C2=A0 =C2=A0| > > | qemuriscv64 |=C2=A0 +205=C2=A0 |=C2=A0 =C2=A0+33=C2=A0 =C2=A0| > > +-------------+--------+---------+ > > > > Signed-off-by: Hemanth Kumar M D > > --- > > Hi Hemanth, > > Thanks for the upgrade. > > I suspect this is responsible of the > runtime_test.RustKernel.test_kernel_rust_sample selftest failure: > > 2026-01-31 16:20:41,991 - oe-selftest - INFO - > runtime_test.RustKernel.test_kernel_rust_sample > (subunit.RemotedTestCase) > 2026-01-31 16:20:41,994 - oe-selftest - INFO -=C2=A0 ... FAIL > ... > ERROR: linux-yocto-6.16.11+git-r0 do_compile: Execution of > '/srv/pokybuild/yocto-worker/oe-selftest-debian/build/build-st-7661= 38/tmp/work/qemux86_64-poky-linux/linux-yocto/6.16.11+git/temp/run.do_com= pile.189616' > failed with exit code 1 > ... > | error: unknown unstable option: `no-jump-tables` > > https://autobuilder.yoctoproject.org/valkyrie/#/builders/35/builds/= 3127 > https://autobuilder.yoctoproject.org/valkyrie/#/builders/48/builds/= 3022 > > Can you have a look at what is going wrong here? > > > Hello, > > To clarify because this is not totally obvious: > This test is defined in the "[PATCH v5 00/15] Enable rust support for=20 > linux kernel" from Harish.Sadineni (also at Windriver) > https://lore.kernel.org/openembedded-core/20260129163910.2612040-10-Har= ish.Sadineni@windriver.com/ > So, the test is not present on master (or even master-next). Hi all, "[PATCH v5 00/15] Enable rust support for linux kernel" this series is=20 taken to mathieu/msater-next, on top of this series when testing with=20 rust-1.93.0 patch has caused this build failure. This failure is already identified in upstream and has a fix in=20 linux-kernel 6.18/master, so i will send a backport fix to linux-yocto=20 v6.16. https://github.com/torvalds/linux/commit/789521b4717fd6bd85164ba5c131f621= a79c9736 Can the rust 1.93.0 patch be tested/merged , By the time above mentioned=20 backported patch taken to linux-yocto v6.16?. > > > Thanks, > Mathieu > > --=20 > Mathieu Dubois-Briand, Bootlin > Embedded Linux and Kernel engineering > https://bootlin.com > > > > > > > --=20 > Yoann Congal > Smile ECS > > -=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D- > Links: You receive all messages sent to this group. > View/Reply Online (#230373):https://lists.openembedded.org/g/openembedd= ed-core/message/230373 > Mute This Topic:https://lists.openembedded.org/mt/117544255/8054390 > Group Owner:openembedded-core+owner@lists.openembedded.org > Unsubscribe:https://lists.openembedded.org/g/openembedded-core/unsub [= Harish.Sadineni@windriver.com] > -=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D- > --------------h7mgXFSEsINxZ807OvfYQh0g Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-MIME-Autoconverted: from 8bit to quoted-printable by mx0a-0064b401.pphosted.com id 6129vDWr3189312


On 2/2/2026 8:45 PM, Yoann Congal via lists.openembedded.org wrote:
=20
CAUTION: This email comes from a non Wind River email account!
Do not click links or open attachments unless you recognize the sender and know the content is safe.


Le dim. 1 f=C3=A9v= r. 2026 =C3=A0 08:52, Mathieu Dubois-Briand via lists.openembedded.org <mathieu.dubois-briand=3Dbootlin.com@lists.openembedded.org> a =C3=A9crit :
On Fri Jan 30, 2026 at 2:41 PM CET, Hemanth.KumarMD via lists.openembedded.org wrote:
> From: Hemanth Kumar M D <Hemanth.KumarMD@windriver.com>
>
> https://blog.rust-lang.org/2026/01/22/Rust-1.93.0/ > Rust changes: https://github.com/rust-lang/rust/releases/tag/1.93.0=
> Cargo changes: https://doc.rust-lang.org/nightly/cargo/CHANGELOG.html#cargo-193-2026-01-= 22
>
> * rust-oe-selftest.patch updated for 1.93:
>   Renamed UI test directive from add-core-st= ubs to add-minicore as in
>   = https://github.com/rust-lang/rust/commit/3796f7de57f5d4cf4325d1f13aeb07fd= aa57983b
>
> * OE-selftests:
>   - Exclude src/tools/remote-test-client fro= m test suite.
>     This unit test modifies the TEST_DE= VICE_ADDR environment variable,
>     which breaks the OE test harness th= at uses the same variable for
>     QEMU remote testing. Filed a bug wi= th upstream:
>     https://github.com/rust-lan= g/rust/issues/151823
>
>   - Enable +v8a feature for cortexa57.
>     Rust 1.93.0 added a regression test= (PR #149549) to verify that the
>     ARMv8-A system register ttbr0_el2 i= s recognized in inline assembly.
>     This addresses issue #97724 where L= LVM wasn't recognizing ttbr0_el2
>     as a valid register. Upstream Rust = enables +v8a by default for all
>     AArch64 targets (PR #105026), but Y= octo's custom target specification
>     doesn't inherit this. Adding +v8a e= nsures LLVM recognizes ARMv8-A
>     system registers, fixing the test f= ailure.
>
>     Related upstream links:
>     - PR #149549: https://github.com/rust-lang/rust/pull/149549
>     - Issue #97724: https://github.com/rust-lang/rust/issues/97724
>     - PR #105026: https://github.com/rust-lang/rust/pull/105026
>
> Test results:
>
> rust v1.93.0
> +-------------+--------+---------+
> | Machine     | Passed | Skipped |
> +-------------+--------+---------+
> | qemux86-64  | 21,689 |   646  &n= bsp;|
> | qemux86     | 21,439 |   89= 6   |
> | qemuarm64   | 21,495 |   840&nbs= p;  |
> | qemuarm     | 21,421 |   91= 4   |
> | qemuriscv64 | 21,466 |   869   |=
> +-------------+--------+---------+
>
> Test results difference (1.93.0 - 1.92.0):
>
> +-------------+--------+---------+
> | Machine     | Passed | Skipped |
> +-------------+--------+---------+
> | qemux86-64  |  +205  |   +3= 3   |
> | qemux86     |  +205  | = ;  +33   |
> | qemuarm64   |  +206  |  &nb= sp;+32   |
> | qemuarm     |  +205  | = ;  +33   |
> | qemuriscv64 |  +205  |   +33&nbs= p;  |
> +-------------+--------+---------+
>
> Signed-off-by: Hemanth Kumar M D <Hemanth.KumarMD@windriver.com> > ---

Hi Hemanth,

Thanks for the upgrade.

I suspect this is responsible of the
runtime_test.RustKernel.test_kernel_rust_sample selftest failure:

2026-01-31 16:20:41,991 - oe-selftest - INFO - runtime_test.RustKernel.test_kernel_rust_sample (subunit.RemotedTestCase)
2026-01-31 16:20:41,994 - oe-selftest - INFO -  ... FA= IL
...
ERROR: linux-yocto-6.16.11+git-r0 do_compile: Execution of '/srv/pokybuild/yocto-worker/oe-selftest-debian/build/build-st-766138/tmp= /work/qemux86_64-poky-linux/linux-yocto/6.16.11+git/temp/run.do_compile.1= 89616' failed with exit code 1
...
| error: unknown unstable option: `no-jump-tables`

https://autobuilder.yoctopr= oject.org/valkyrie/#/builders/35/builds/3127
https://autobuilder.yoctopr= oject.org/valkyrie/#/builders/48/builds/3022

Can you have a look at what is going wrong here?

Hello,

To clarify because this is not totally obvious:
This test is defined in the "[PATCH v5 00/15] Enabl= e rust support for linux kernel" from Harish.Sadineni (a= lso at Windriver)
Hi all,

"[PATCH v5 00/15] Enable rust support for linux kernel" thi= s series is taken to mathieu/msater-next, on top of this series when testing with rust-1.93.0 patch
has caused this build failure.

This failure is already identified in upstream and has a fix in linux-kernel 6.18/master, so i will send a backport fix to linux-yocto v6.16.
https://github.c= om/torvalds/linux/commit/789521b4717fd6bd85164ba5c131f621a79c9736

Can the rust 1.93.0 patch be tested/merged , By the time above mentioned backported patch taken to linux-yocto v6.16?.  
 

Thanks,
Mathieu

--
Mathieu Dubois-Briand, Bootlin
Embedded Linux and Kernel engineering
https:/= /bootlin.com






--
Yoann Congal=
Smile ECS

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